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INFLUENCE OF CR 3+ION SUBSTITUTION ON STRUCTURAL AND ELECTRICAL PROPERTIES OF NICKEL FERRITE NANOPARTICLES
A.D.Tayade, G. R.Jadhao, Dr.M.C.Sable

Published in: International Journal of Current Engineering And Scientific Research ( IJCESR)
Volume- 5, Issue-1, pp.6-16, Jan 2018
DPI :-> 16.10046.IJCESR.2018.V5I1.616.2305



Abstract
Chromium substituted Nickel Ferrite nano particles with general formula NiFe2-xCrxO4 (x=0.0, 0.1, 0.2, .3, 0.4, 0.5) have been synthesized using sol gel auto combustion method. Rietveld refinement analysis of XRD pattern indicates the formation of single phase cubic spinal structure. The lattice constant as well as particle size (crystalline size) was found to be decrease with increase in Chromium concentration up to X=0.2.But for X=0.3 slight increase is observed and further increase of X gives decrease in lattice parameter. The investigation on dielectric const (? ,(dielectric loss factor (tan ? (and A.C. resistivity was carried out in the frequency range 100HZ to 1MHZ from room temp to 523K. The A.C. resistivity is found to be decreases with increase in frequency which suggest conduction due to small Polaron hopping. Frequency dependence of dielectric constant shows normal behavior and agrees with Koops phenomenological theory of dielectric dispersion.

Key-Words / Index Term
Spinal Ferrites, Sol gel autocombustion, small polaron hopping.

How to cite this article
A.D.Tayade, G. R.Jadhao, Dr.M.C.Sable , “INFLUENCE OF CR 3+ION SUBSTITUTION ON STRUCTURAL AND ELECTRICAL PROPERTIES OF NICKEL FERRITE NANOPARTICLES”, International Journal of Current Engineering And Scientific Research ( IJCESR), 5, Issue-1, pp.6-16, Jan 2018. DPI:16.10046.IJCESR.V5.I1.2305